Saving Fuel/MPG Guide v1.11111111 - inc Torque Figures, Tyre Pressures, Rated MPG - Page 8 - Saxperience

Havark · 17th February 2011, 09:27

Quote:

Originally Posted by adsayer

bosh.

That was from NA to Brighton and back again (going a slightly weird route).

I'm guessing that was around 78-80MPG. not my best run, weather wasn't on my side. But gives you an idea.

Holy Shit!! i only get about 450 miles on a full tank!! but thats town driving!!

kmak577 · 6th March 2011, 21:39

I know that the most efficent speed from a aerodynamical point of view is 56pmh but curious what the 1.1 mark 1 engine most effcient speed was from an overall perspective, anyone got say a scan guage 2 to find out?

dwh · 18th March 2011, 23:11

Very informative read - well done

lillocky · 22nd March 2011, 10:53

good guide buddy

Barry123 · 22nd March 2011, 12:24

Thank you everyone

Needs a few tweaks here and there - as it's not a very fluid read. But hang in there it will be done!

Ads

Venns · 18th April 2011, 22:26

I have a 1.1, if i do 30mph in 4th the mpg can get it about 45-50 eaisly

Slugshead · 28th April 2011, 23:22

Impressive!!

My record in thr vts is 430 miles on a tank

SaxoJamie · 28th April 2011, 23:30

How are people getting 400miles+ in their vtr/s? The most I can get is 330 miles from tank full to light on my vtr and that is driving economically. The last mpg run I measured was 36mpg.

Barry123 · 29th April 2011, 13:33

Are you limiting your runs to town driving or short journeys?
If it's economical town driving you're not going to get 40+ mpg

SaxoJamie · 30th April 2011, 01:04

Quote:

Originally Posted by adsayer

Are you limiting your runs to town driving or short journeys?
If it's economical town driving you're not going to get 40+ mpg

I do a mixture like a 5 mile run to work and back 5 times a week and drive to Crawley (about 22miles from Brighton and back) twice a week. My car does need a service which I'm planning to do soon but it is completely standard apart from the resonator box I have removed and a sub in the boot. I don't see much difference whether I take it easy changing gear under 3k revs or floor it past 5k revs. I have been spending upto £200 a month on petrol.

kirk46 · 24th May 2011, 17:21

great guide...

and im impressed with the mileage in the diesel

i managed around 550 on my diesel (all town driving) which is a 50/50 mix of diesel and veg oil

i get 55mpg

Barry123 · 24th May 2011, 17:55

for town that's excellent.

I need a 1.5d back in my life.

D--R--E--W · 24th May 2011, 18:00

Currently getting around the 50mpg mark with my little 1.5d 106. not to bad but I aint used to driving a derve, sure once its serviced and I change the glow plugs I will get better. I'll keep this updated

kirk46 · 24th May 2011, 18:05

Quote:

Originally Posted by adsayer

for town that's excellent.

I need a 1.5d back in my life.

cheers

and thats not slow town driving

its my work horse delivering takeaways lol

Manolis · 28th May 2011, 11:47

I just read the article which is quite usefull and thanks a lot. I got a question though does a 2003 saxo has DFCO (Deceleration Fuel Cutoff) cause you mentioned that saxos injects fuel while engine breaking. I thought that most car manufactured from 1999 and later had DFCO

kirk46 · 30th May 2011, 08:42

also does the diesel use any fuel while de-accelerating?

JTheLegandary · 6th June 2011, 12:24

Id never thought this much into saving fuel its very interesting, thank you

Barry123 · 7th June 2011, 00:12

Quote:

Originally Posted by Manolis

I just read the article which is quite usefull and thanks a lot. I got a question though does a 2003 saxo has DFCO (Deceleration Fuel Cutoff) cause you mentioned that saxos injects fuel while engine breaking. I thought that most car manufactured from 1999 and later had DFCO

A 2003 saxo definitely does (any saxo with the 3 plug ECU basically). See BobC's Bosch M(E) 7.4.4 ignition-injection ECU tutorial. I'm not sure on the single plug though but I suspect not.

Quote:

Originally Posted by kirk46

also does the diesel use any fuel while de-accelerating?

The engine on the 1.5d is a basic mechanical type derived from an early 90's 1.4d - so it doesn't have 'cut' during deceleration since the lever on the fuel pump just hits the idle screw (and so chucks in idle-ish levels of fuel which is tiny enough to be almost negligible). As diesel engines go it's not super efficient (even compared to mechanical turbos nevermind the latest generation common rail jobbies) - but it does make up for that fact by being as simple and reliable as it can possibly be - and shoved in a light car.

Quote:

Originally Posted by JTheLegandary

Id never thought this much into saving fuel its very interesting, thank you

No problem at all!

JTheLegandary · 10th June 2011, 12:03

Ive been using this for the past few days and its made SUCH a diference. I cant beleive how much petrol ive been wasting driving like a tit haha.

S202FSC · 14th June 2011, 13:51

Quote:

Originally Posted by adsayer

Firstly, I'm not sure where it should go. Mods, move at will

Ok I’ve have quite a few people contact me regarding MPG, either calculating it, what is good MPG, how to pull babes, how to get decent MPG, why is someone getting bad MPG etc etc so I’ve complied this little post to explain literally everything I could possibly think of… I want everyone to understand it so I’ve gone for the ‘person completely new to MPG’ approach. Please don’t see it as patronising, its not.

MPG
MPG stands for Miles per Gallon. This is a measurement of how far a car can travel on the gallon of fuel. The more you travel on a gallon of fuel, the higher the MPG and crucially the cheaper your travelling costs will be. Your car’s MPG is dependent upon the engine, the transmission, the aerodynamics, the weather (yup the weather plays a big part on MPG), the weight, but most critically the way you drive.

Calculating MPG
Some cars actually calculate this for you however their accuracy is pretty limited – so it’s always a much better practice by applying your brain and doing it manually.
The way to do this is:

1) Fill up the car to the brim, be warned this will take around 10 minutes to fill the tank up completely and you'll have to do this at least twice if you want to measure the mpg once. A more realistic method, although less precise tank to tank is to top until the nozzle clicks. Wait a few seconds then beginning filling again, click. Wait a few seconds and beginning filling until it clicks. So 3 clicks with a good pause in between.
2) Reset the trip distance monitor on the dash
3) Drive around
4) Come back to a fuel station and then repeat step one.
5) Make a note of the fuel put into the car and the distance on the Trip Computer.

Then get your calculators out…
Take the distance and divide it by the number of litres put in - This will give you an answer in miles per litre of fuel.
Then multiply that value by 4.55 (or if you're extra nerdy 4.54609188)
This will give you your Miles Per Gallon for that tank.

Example:
I drive for 300 miles
I fill up and put in 29.34 litres.

So 300 / 29.34 = 10.22
Then 10.22 x 4.55 = 46.5 MPG

Simple as that

Below is a rough guide to improving your mpg/reducing your running costs...

Can I ask where the figure 4.55 comes from, or am I just being stupid?